"Can I jump in and ask a couple of stupid, off-topic questions? What secures the boarding ladder when not in use? Also, is it padded to prevent scuffs from the ribs? Thanks."
That is a good question and for the most part Riva thought of everything, including storage.
In most boats I have seen (smaller) there is a large storage under the front deck. Riva decided to put this space (most of the time wasted by Chris Craft) to good use and made a storage floor. In typical Riva fashion the floor is made of slats of wood and is held in place with white rubber bumpers. Holes are drilled in the flooring boards and the bumpers slide into them.
The boarding ladder is stored here as well as many other items. Here is a not so good pic of what I am describing.

In the engine compartment is additional storage for an anchor on the starboard and tool box on the left. And paddle storage is different depending on model. See Pics





